/*========================== begin_copyright_notice ============================

Copyright (C) 2019-2021 Intel Corporation

SPDX-License-Identifier: MIT

============================= end_copyright_notice ===========================*/

#pragma once

#include "common/LLVMWarningsPush.hpp"
#include <llvm/Pass.h>
#include <llvm/IR/InstVisitor.h>
#include "common/LLVMWarningsPop.hpp"

namespace IGC {
// This pass replaces all occurences of frem instructions with proper builtin calls
// This is needed, because new SPIRV-LLVM translator outputs frem instructions
// which are not fully handled by IGC.
class HandleFRemInstructions : public llvm::ModulePass, public llvm::InstVisitor<HandleFRemInstructions> {
public:
  static char ID;

  HandleFRemInstructions();

  /// @brief Provides name of pass
  virtual llvm::StringRef getPassName() const override { return "HandleFremInstructions"; }

  /// @brief Main entry point.
  ///        Find all frem instructions and replace them with proper builtin calls
  /// @param M The destination module.
  bool runOnModule(llvm::Module &M) override;

  void visitFRem(llvm::BinaryOperator &I);

private:
  llvm::Module *m_module = nullptr;
  bool m_changed = false;
};
} // namespace IGC
